Machine for inserting fastenings.



W. 0. WHEELER. MACHINE FOR INSERTING PASTENINGS.

APPLICATION FILED IEB.23, 1907.

Patented May 31, 1910.

2 SKBETS-SHEBT 1.

WT/VESSES". AWE/WW1 W 0. WHEELER.

MACHINE FOR IN$ERTING FASTENINGS. AEPLIOATION FILED FEB.23,1907.

959,66. Patented May 31,1910.

2 SHEETS-SHEET 2.

WW? Q/ TE FE.

WALTER 0. WHEELER, WORCESTER, MASSACHUSETTS, ASSIGNOR TO UNITED SHOEMACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

MACHINE FOR INSERTING FASTENINGS.

Specification of Letters Patent.

Patented May 31, 1910.

Original application filed. August 7, 1901, Serial No. 71,182. Dividedand this application filed February 23,

To all whom it may concern:

Be it known that I, WALTER O. \VHEELER, a citizen of the United States,residing at Worcester, in the county of \Vorcester and Commonwealth ofMassachusetts, have invented certain Improvements in Machines forInserting Fastenings, of which the following description, in connectionwith the accompanying drawings, is a specification, like referencecharacters on the drawings indicating like parts in the several figures.

This invention relates to fastening-inserting machines of the type inwhich the fastenings are formed in the machine from a metal strip orribbon by severing the projecting end of the strip, the severed endforming a fastening, the inserting axis of which was positioned beforethe severing operation transversely of the length of the strip. Thesefastenings are usually formed with one or both sides inclined to theinserting axis, and, to provide for this where the fastenings are formedfrom a strip or ribbon having straight parallel sides, the strip isusually oscillated or rotated in such manner that the portion of the endof the strip from which the point of the fastening is to be formed liesnext to the portion from which the head of the next fastening is to beformed. This is usually effected by rotating the strip through an arc of180, after each fastening is severed.

The general purpose of the present invention is to simplify theconstruction of machines of this type, preferably by multiplying thefunctions of various elements of the machine, thus permitting areduction in the number of the elements. lVith the reduction in thenumber of elements the complexity of the construction is lessened andits compactness correspondingly increased.

A particular object of the invention is to provide a simple andeffective strip feed that is actuated by the rotation of the stripcarrier to feed the strip forward into the severing mechanism.

A further object of the invention is to rovide a severing mechanismwhich is also actuated by the rotation of the strip carrier, after thestrip has been fed forward by the feeding mechanism, to sever theprojecting end of the strip to form a fastening.

In machines of this type, as usually con structed, the strip coil fromwhich the fasten- Serial No. 359,017.

ing strip is drawn is carried by some stationary part of the machine. Itis therefore requisite, in order to avoid twisting the strip, that thestrip carrier be oscillated from one fastening-severing position to theother and back. To provide for this oscillating movement requires theintervention of more or less complicated mechanism between thecontinuously rotating driving shaft and the strip carrier. In theembodiment of the invention illustrated, the strip coil is shown asmounted upon the strip carrier to rotate therewith, so that the stripcarrier may be rotated in one direction only through connection with thedriving shaft.

Another object of the invention therefore is to provide an improved andcompact strip and coil carrier. The strip carrier may be connected tothe driving shaft, directly or indirectly, through transmittingmechanism which imparts to it a uniform speed of rotation, or, throughany of the well-known speed varying mechanisms it may be so connectedthat its speed of rotation varies in different parts of its rotativemovement.

In the drawings, which illustrate the fastening-inserting mechanismdisclosed in the application of Falter O. lVheeler, Serial No. 71,182,filed August 7, 1901, of which application the present applicationconsti tutes a division, Figure 1 is a side elevation of the upper partof a fastening-inserting machine embodying the invention; Fig. 2 is aview similar to Fig. 1, but on a larger scale, of the strip carrier andof the feeding and the severing mechanisms; Fig. 3 is a bottom plan Viewpartially in section, of the part shown in Fig. 2; Fig. 4 is a sectionalview on the line aa of Fig. 8 looking toward the left in that figure,the strip carrier being shown as rotated a quarter of a revolution fromits position in Fig. 3; Fig. 5 is a sectional view on the line b-b, Fig.3, viewed from the same direction as Fig. 4, parts being shown in thesame position as in Fig. 3; Fig. 6 is a view of a portion of thefastening strip with two successively severed fastenings, the fasteningsbeing shown in the relative position to each other and to the stripwhich they occupied before severing.

Like reference characters designate corresponding parts in the severalviews.

A standard 12 supports a head ii on which is mounted the main drivingshaft 16, carrying fast and loose pulleys 18 and 20 respectively, of anyusual or preferred construction. A forked wedge member 22, connected toa treadle (not shown) is adapted, when it is depressed, to force theloose or driven pulley 20 into frictional engagement with the fixedpulley 18 and thus impart motion to the shaft 16. A driver bar 24carrying a driver 26 is raised and released at each revolution of shaft16 by a cam 28 of well-known construction, and is positively depressedto drive the fastening by a springactuated arm 30. A work support 32pivoted upon the standard 12 is provided to support the work into whichthe fastenings are to be inserted. The metal strip 34, from which thefastenings are to be formed, is taken from a coil which is confined in aslot 36 in the rotatable strip carrier or shaft 38 by a member 40 whichextends across the carrier 38 and has downwardly projecting lugs 42 atits opposite ends, the said lugs 42 embracing the coil between them. Thestrip 34, drawn from the coil, passes over a guide roller 44 and througha central opening in the carrier 38, the opening being approximately ofthe size and shape of the strip. Feed rolls 48 and 50 engage the stripon opposite sides in the passage 46, the feed roll 48 being fixedlymounted in carrier 38 and feed roll 50 being carried by a block or frame52, springpressed toward roll 48 by springs 54, whereby the rolls engagethe strip with a yielding pressure. The roll 50 is actuated through atoothed wheel 56, connected to rotate with it. Located upon the frameare two teeth or lugs 58, which are so positioned that each engages thetoothed wheel and rotates it one step at each rotation of the carrierorshaft 38. As the teeth 58 are 180 apart, the toothed wheel is rotatedone step at each half rotation of the carrier 38. Through gears 60, 62,the roll 48 is rotated with roll 50 so that the strip 34 is advanced ateach half rotation of carrier 38. Carrier 38 is rotated through gearwheel 64 which meshes with the gear wheel 66 on the shaft 16. The gearwheels 64, 66 may be either circular to give a uniform speed of rotationto carrier 38, or elliptical to vary the speed at the time the fasteningis severed. The fastening-severing mechanism comprises cutter levers 68,7O pivoted upon the machine frame upon opposite sides of the forward endof the strip carrier or shaft 38. The cutting ends of said levers areadapted to enter a cut-away portion in the side of the driver tube 72and the strip 34 is fed forward so that its end projects over the driverpassage in said tube, whereby the fastening, as it is severed, is causedto fall into the driver passage into position to be driven. To aid inguiding the fastening into the driver passage, the forward ends of thecutter levers are beveled so that when closed together their forwardedges form portions of the side walls of the driver passage.

The cutting ends of levers 68, 7 0 are kept normally separated bysprings 74, 76, pressing upon their other arms. Twice durin eachrotation of the carrier or shaft 38 the cutter levers are actuated tosever a fastening through the action of a cam 78 on carrier 38 havingtwo cam projections which simultaneously engage the rear arms of levers68 and 70 respectively and force them apart against the action ofsprings 74, 76, thus forcing together the cutting ends. The camprojections on cam 78 have abrupt drop-off portions, so that as soon asthe fastening has been severed from the strip the rear arms of levers 68and 70 are released and the cutters are at once separated by the actionof springs 74, 76. In order that the sides of the fastenings may betapered, the carrier or shaft 38 is inclined to the cutting edges ofcutter levers 68 and 70. As the carrier 38 is rotated through an angleof 180 after each fastening is severed before the next fastening issevered and the inclination of carrier 38 to cutter levers 68, 70remains the same, it will be seen, as shown in Fig. 6, that the broadportion or head of one fastening is situated in the strip, beforesevering, adjacent the narrow portion or point of the next fastening.

The operation of the machine is as follows: The loose pulley 20 beingbrought into engagement with the fixed pulley 18 upon shaft 16 throughthe action of the wedge member 22, the shaft 16 is actuated, and throughgears 66, 64, rotates the strip carrier 38. At each half rotation of thestrip carrier 38, the toothed wheel 56 engages one of the stationaryteeth 58 and is moved thereby one step, thus actuating the rolls 50, 48to feed forward the strip 34 between the cutters 68 and 70 a distancesufficient to form a single fastening. Upon further rotation of thestrip carrier 38, ap-

proximately one-quarter of the complete rotation, the cam projectionsupon the cam 78 engage the rear ends of the cutter levers 68, 70simultaneously and force the cuttin ends together to sever thefastening. The astening drops into the driver tube 72 and immediatelythereafter the driver descends to drive it into the work. It will benoted that two fastenings are severed and driven for each rotation ofthe carrier 38 and that the lines of severin of the two fastenings areinclined in di erent directions from the same edge of the strip.

The various parts are preferably so timed that the strip is fed forwardwhile the cutters are in their extreme separated positions, and afterthe driver has returned to its upper position from driving thepreviously formed fastening. This will require approximately a quarterrotation of shaft 38 to intervene between the actuation of the cuttersand the actuation of the feeding device. The cutters do not theninterfere with the feeding of the strip and the strip does not interferewith the action of the drlver.

Having described my invention, what I claim as new and desire to secureby Letters Patent of the United States is:

l. The combination with a shaft constructed to carry a ribbon offastening material and means for imparting to said shaft an angularmovement, of means for intermittingly feeding forward a section of saidribbon, means for severing said ribbon after it has been fed forward,and connections between both of said means and said shaft whereby theyare controlled by the movement of said shaft.

2. In a machine for inserting fastenings, the combination with the frameof the machine, of a rotatable shaft mounted in said frame andconstructed to carry a ribbon of fastening material, fastening-severingmechanism carried by the frame, ribbon feeding mechanism carried by theshaft, means carried by the shaft for actuating the severing mechanism,and means carried by the frame for actuating the feeding mechanism.

3. The combination with a shaft constructed to carry a ribbon offastening material and means for imparting to said shaft an angularmovement, of means for intermittingly feeding forward a section of saidribbon, cutters for severing said ribbon after it has been fed forward,and means carried by said shaft for actuating said cutters.

4:. The combination with a shaft carrying a ribbon of fasteningmaterial, and means for imparting to said shaft an angular move ment, offeed rolls carried by the shaft for engaging said ribbon, operatingmeans for said rolls comprising a rotatable member attached to one ofthe rolls and having a plurality of engaging projections and astationary member adapted to engage these projections successively uponsuccessive rotations of the shaft.

5. In a machine of the class described the combination with a frame ashaft mounted therein constructed to carry a ribbon of fasteningmaterial and means for rotating said shaft, of cutters mounted upon theframe, between which cutters the fastening material is fed, and meansupon the shaft for actuating the cutters to sever the portion offastening material fed between them.

6. In a fastening inserting machine, in combination, a rotatable shaft,constructed to support a metallic ribbon, feed devices carried by saidshaft, stops arranged to be engaged by said feed devices whereby thefeed devices, in passing, are caused to move for feeding the metallicribbon step-by-step, at each half rotation of said shaft, cutterdevices, and a cam on said shaft to operate the cutter devices forcutting a section from the metallic ribbon, said section constitutingthe fastening.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

WALTER 0. WHEELER.

Witnesses:

I-I. DORSEY SPENCER, ARTHUR L. RUssnLL.

Corrections in Letters Patent No. 959,666.

It is hereby certified that in Letters Patent No. 959,666, granted May31, 1910,

upon the application of Walter 0. Wheeler, for an improvement inMachines for Inserting Fastenings, errors appear in the printedspecification requiring correction as follows: Page 3, line 38, the wordcarrying should be stricken out and the Words constructed to carryinserted instead; same page, line 42, the Word operating should bestricken out, and same line after the word for the words intermittentlyteaming should be inserted; and that the said Letters Patent should beread with these corrections therein that the same may conform to therecord of the case in the Patent Oflice.

Signed and sealed this 5th day of July, A. D., 1910.

[SEAL] F. A. TENNANT,

Acting Gammt'ssz'oner of Patents.

